Engine.



No. 630,229. Patented Aug. l, |899. G. P. B. HOYT.

ENGINE.

' (Application led Nov. 8, 1898.) (No Modal.)

W l W/T/VESSES /NVENTOH A TTOHNEYS,

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UNiTn STATES PATENT OFFICE.

i -f J JMABRIIJL P. B. IIOYT, OF NE YORK, N. Y.

ENGINE.

SPECIFICATION forming part of Letters Patent No. 630,229, dated August1, 1899.

Application led November 8. 1898. Serial No. 695,850. (No lnodeld To allwhom it may concern:

Beit known that l, GABRIEL P. B. Hov'r, of the city of New York,(Jamaica,) borough of Queens, in the county of Queens and State of NewYork, have invented a new and Improved Engine, of which the following isa full, clear, and exact description.

The object of the invention is to provide a new and improved enginewhich is simple and durable in construction, very effective inoperation, adapted to run at a high rate of speed, and arranged totransmit the motion given to the piston by the motive agentto shaftswithout much, if any, shock or jar.

'lheinvention consists of novel features and parts and combinations ofthe same, as will be fullydescribed hereinafter and then pointed out inthe claims.

Reference is to be had to the accompanying drawings, forming apart ofthis specilication, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional side elevation of the improvement on the line 1l in Fig. 2. Fig. 2 is a sectional plan view of the same on the line 2 2in Fig. 1, and Fig. 3 is a sectional side elevation of a modied form ofthe improvement.

The improved engine illustrated in Figs. 1 and 2 is provided witha'cylinder A, in which reciprocates a piston B, actuated by a suitablemotive agent admitted to and exhausted from the ends of the cylinder bysuitable valves C, as indicated in Fig. 1, each valve having asupply-pipe C', connected with a suitable source of supply, and anexhausti e C2 for carr vin0` off the exhaust motive PP 5 s agent.

In the piston B, at or near the middle thereof, is arranged atransversely-ex tending elongated slot B', in which travel wrist-pins DD' of crank-arms E E', respectively secured on shafts F F',respectivelyjournaledin suitable bearings in the cylinder-A, as will bereadily understood by reference to Fig. 2, said shafts passing throughvertically-disposed elongated slots in the walls of the cylinder toallow free reciprocating motion of the piston in the cylinder. connectedwith each other by suitable gearwheels G G', and each of said shafts isprovided with a y-wheel H.

The outer ends of the shafts F F' are It is evident that when the motiveagent alternately admitted to the ends of the cylinder reciprocates thepiston B therein then a continnous rotary motion is given to the twoshafts F F' by the action of the slotted piston on the crank-arms E E',engaging with their wristpins the slot B in the piston. As the twoshafts F F are geared together, it is evident that a uniform rotarymotion is given to the said two shafts without shock or jar, especiallywhen the piston starts on the return stroke, as the two shafts rotate inopposite directions, due to the gearing connecting the outer ends of theshafts with each other. The piston is always perfectly balanced, as thewrist-pins, revolved oppositely by said gear, are at all positions ofthe stroke equal distances from the center of the piston on oppositesides of the center line.

Asillustrated in Fig. 1, a cylinder of a large diameter and havingapiston of a short stroke is employed; butin order to obtain a longerstroke with a piston of less diameter itis necessary to provide thecylinder A' (see Fig. 3) with an enlargement A2 at or near the middlefor receiving the enlarged slotted middle portion B3 of the piston B2.The operation is the same as above described with reference to Figs. 1and 2-that is, the slot B4 in the piston engages the wrist-pins D D' ofthe crank-arms E E', secured on the shafts F F', respectively.

As shown in Fig. 2, the valves@ for admitting and exhausting the motiveagent are actuated from one of the shafts by providing the same with asuitable cam I, actuating a link I', (see Fig. 1,) connected with thevalveplugs of the valves C. It is evident, however, that other suitablemeans may be ernployed for actuating the valves, as the latter insteadof being oscillating valves may be in the form of the usualslide-valves, if desired.

As the shafts F F' rotate in opposite directions, the power can betransmitted from either shaft, according to the direction in which themachinery to be driven is to be run, and, if desired, each shaft may beprovided with a fast and loose pulley connected by belts with machines,one of which runs forward and the other backward, as the case may be. Bythe arrangement described a uniform rotary motion is given to the twoshafts, jar and shock is completely avoided, and the engine can be runat a very high rate of speed.

Having thus fully described my invention,

5 I claim as new and desire to secure by Letters Iq, ing Wrist-pinsextending into said slot, shafts carrying said crank-arms, andgear-wheels secured on said shafts and in mesh with each other,substantially as shown and described.

2. An engine, comprisinga cylinder, a pis- -I5 tonmounted to reciprocatetherein and prof vided with an elongated slot, crank-arms havingWrist-pins extending into said slot, shafts carrying said crank-arms,gear-Wheels secured on said shafts and in mesh withy each other, valvesfor controlling the admission to and exhaust of the 'motive agent fromthe cylinder, and a valve-gear operated from one or both of said shaftsand connected With said valves', substantially as shown and described.

3. In an engine, the combination of a cylinder, a -piston mounted tomove therein, two shafts revolubly mounted in the cylinder and gearedwith each other, and a crank attached to each shaft, the cranks beingoppositely dis,- posed and having their Wrist-pins in sliding connectionwith the piston, whereby to turn the shafts upon the movement of thepiston.

GABRIEL P. B. IIOYT.

Vitnesses: THEO. G. HosTER,

J No. M. RITTER.

